For anyone that has done this how has it held up, from talking to place I have 2 options one is to get the bumpers chemical dipped or blast them and rough them up to get the powder coat to stick. At first glance dipped seems the way to go but from what I understand after you dip in the chemical bath you have to neutralize it with water, so bare metal + water= not that great of an idea, I don't know need some input.